<div class="container">
    <div class="tab">
      <div class="sub-menu">
        <div class="sub-but"><{$class_data['name']}><span class="sub-lbg"></span></div>
      </div>
    </div>
  <ul class="nav-right unstyled">
      <li class="<if condition="$class_nav eq 'subject'">active nav-rcur</if>"><a href="<{:U('Index/subject',array('class_id'=>I('class_id')))}>">学院首页</a></li>
      <li class="<if condition="$class_nav eq 'course'">active nav-rcur</if>"><a href="<{:U('Index/course',array('class_id'=>I('class_id')))}>">课程</a></li>
      <li class="<if condition="$class_nav eq 'rank'">active nav-rcur</if>"><a href="<{:U('Index/rank',array('class_id'=>I('class_id')))}>">高分榜</a></li>
      <li class="<if condition="$class_nav eq 'voice'">active nav-rcur</if>"><a href="<{:U('Index/voice',array('class_id'=>I('class_id')))}>">学员心声</a></li>
    </ul>
  </div>